Home / 125,105.21-172,657.52-71,398.31

Finding the Fourth Proportional to 125,105.21, 172,657.52 and 71,398.31

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Solution

The fourth proportional to 125,105.21, 172,657.52 and 71,398.31 is: 98,536.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,105.21 : 172,657.52 = 71,398.31 : x
  2. Step 2: Convert to fraction form
    125,105.21/172,657.52 = 71,398.31/x
  3. Step 3: Cross multiply
    125,105.21x = 172,657.52 × 71,398.31
  4. Step 4: Simplify right side
    125,105.21x = 12,327,455,136.79
  5. Step 5: Solve for x
    x = 12,327,455,136.79/125,105.21
  6. Step 6: Final answer
    x = 98,536.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.